Effectiveness
This is 95% effective or better, the reason for this is no surgical operation can ever be assumed 100% successful, the body will in some cases repair it self fully or partially as well, so make sure to consult your doctor.
Positive Benefits
You will never have to deal with any form of birth control.
Risks
Surgery is always risky, and the skill of the doctor and your bodies reactions to the surgery and other complications must be considered as well, please speak with your doctor before you use a surgical method of birth control.
Other risks include having an ectopic, or tubal, pregnancy which is dangerous to the mother and child, thankfully doctors can normally spot this early on, and can recommend the appropriate course of action.
Is This Reversable
Yes, micro surgery can reverse the effects but the success rate of reversal will depend on the type of surgery that was initially performed and your age. If you are over 35 or have less then 4 centimeters of tube left, you should conceder yourself permanently sterile.
Final Thoughts
Permanent sterilization is best suited to women who are happy with what they have, child wise. If there is any that you might want another child in the future, a different method of birth control should be used.